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Bug 2153458

Summary: [OSP 16.2][cinder][nfs] - creating multiple volume at the same time leads to wrong capacity calculation
Product: Red Hat OpenStack Reporter: Flavio Piccioni <fpiccion>
Component: openstack-cinderAssignee: Alan Bishop <abishop>
Status: CLOSED CURRENTRELEASE QA Contact: msava
Severity: urgent Docs Contact: Andy Stillman <astillma>
Priority: urgent    
Version: 16.2 (Train)CC: abishop, eharney, enothen, gcharot, ifrangs, jamsmith, msava, oelswah, senrique
Target Milestone: z5Keywords: TestOnly, Triaged, ZStream
Target Release: 16.2 (Train on RHEL 8.4)   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: openstack-cinder-15.6.1-2.20230228134941.9f9194d.el8ost Doc Type: Bug Fix
Doc Text:
Before this update, the Block Storage service (Cinder) miscalculated the amount of free space available on a storage back end after deducting the amount allocated for a newly created volume. These free space calculation errors would accumulate until the next periodic update of the actual amount of free space available on the storage back end. Therefore the rapid creation of multiple volumes could create errors could create errors by falsely indicating that the storage back end was out of space. With this update, Block Storage correctly calculates the available free space on a back end after creating a volume. Therefore multiple volumes can be rapidly created on a back end without errors due to incorrect free space calculations.
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Clone Of: Environment:
Last Closed: 2023-05-04 10:33:31 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Flavio Piccioni 2022-12-14 16:09:24 UTC 
Description of problem:
Using NFS (Netapp) backend, volume creation is failing when creating multiple volumes at the same time

Version-Release number of selected component (if applicable):
Red Hat Openstack 16.2.3

How reproducible:
create multiple volumes at the same time

Actual results:
volume creation is failing

Expected results:
Volume creation to succeed
Comment 13 Alan Bishop 2022-12-16 18:43:54 UTC 
It looks like this issue is resolved by a patch that merged in zed [1].

[1] https://review.opendev.org/c/openstack/cinder/+/831247

Next step is to investigate backports, both upstream and down.
Comment 34 Alan Bishop 2023-04-18 14:07:48 UTC 
It's fine.
Comment 36 Lon Hohberger 2023-04-27 10:33:37 UTC 
According to our records, this should be resolved by openstack-cinder-15.6.1-2.20230310075424.a19c1c9.el8ost.  This build is available now.